{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3959",
    "entityType": "User",
    "nonce": "0x2c391cdd590068b7919bed076af1ab1adbe0ba412b05f3327476a3af1a12f549",
    "signature": "0x641e375d0a6762ca59af66621503e82151a5db258ce322b219ea45d8c1051ed23614eac2948844f450c195dbdfefc54087a4f420a58021f01b38df0f5c30698b1b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}